From The Collaborative International Dictionary of English v.0.48:
Hide \Hide\, n. [AS. h[imac]d, earlier h[imac]ged; prob. orig.,
land enough to support a family; cf. AS. h[imac]wan,
h[imac]gan, members of a household, and E. hind a peasant.]
(O. Eng. Law.)
(a) An abode or dwelling.
(b) A measure of land, common in Domesday Book and old
English charters, the quantity of which is not well
ascertained, but has been differently estimated at 80,
100, and 120 acres. [Written also hyde.]
[1913 Webster]